In between the tree trimming and gift-giving, President-elect Barack Obama is inviting Americans to spend part of the holiday season talking about health care -- and report back to him. As he gears up for major health reform legislation next year, Obama is encouraging average Americans to host informal gatherings to brainstorm about how to improve the U.S. system. The sessions, which could take place at a party, over a Menorah-lighting or at the annual Christmas cookie bake-off, are to be held Dec. 15 to Dec. 31. Former senator Thomas A. Daschle, Obama's point person on health, will attend at...